apps/examples/tc_umm_heap.c : Add get free/largest size TC
apps/examples/tc_umm_heap.c : Add get free/largest size TC

Covered APIs :
  umm_get_heap_free_size(), umm_get_largest_freenode_size()
Scenarios :
  Compare to return of each APIs and return of mallinfo
Test Result :
  [umm_get_heap_free_size] PASS
  [umm_get_largest_freenode_size] PASS

Signed-off-by: jeongchanKim <dd29dda359f9c9995ad03eb5d0e774929bcceb5c@samsung.com>

jeongchanKim/TizenRT,sunghan-chang/TizenRT,sunghan-chang/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,an4967/TizenRT,an4967/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,an4967/TizenRT,jeongarmy/TizenRT,sunghan-chang/TizenRT,jeongchanKim/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,Samsung/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,Samsung/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,an4967/TizenRT,sunghan-chang/TizenRT,jeongarmy/TizenRT,an4967/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,sunghan-chang/TizenRT,an4967/TizenRT